Lui Marcelo Mastromonico, Silas Marcia Ap Grandini, Apelbaum Benny, Oshima Akioshi
Laser Vision, Guarulhos, São Paulo, Brazil.
J Refract Surg. 2002 May-Jun;18(3 Suppl):S321-2. doi: 10.3928/1081-597X-20020502-06.
To evaluate laser in situ keratomileusis (LASIK) performed with the Nidek EC-5000 excimer laser in 66 astigmatic eyes with cylinder from 4.00 to 8.00 D.
LASIK was performed with the Nidek EC-5000 excimer laser in 66 astigmatic eyes with cylinder from 4.00 to 8.00 D. Based on Chayet's nomogram, ablation zone diameters were 5.5 mm (steep meridian ablation) to 7.5 mm (flat meridian ablation). In eyes with simple myopic astigmatism, mixed astigmatism, and compound myopic astigmatism (low sphere), ablation was performed in both meridians. In eyes with simple hyperopic astigmatism, ablation was performed in the flat meridian alone. In eyes with compound hyperopic astigmatism, ablation zone diameter was 5.5 mm and the transition zone was 7.5 mm.
Uncorrected visual acuity was 20/40 or better in 89% of eyes and was equal to preoperative best spectacle-corrected visual acuity in 62% of eyes. No eyes lost lines of best spectacle-corrected visual acuity.
Using the Nidek EC-5000 excimer laser, we had satisfactory results in the treatment of astigmatic eyes with cylinder from 4.00 to 8.00 D, based on Chayet's nomogram.
评估使用Nidek EC - 5000准分子激光对66只散光度数在4.00至8.00 D的眼睛进行准分子原位角膜磨镶术（LASIK）的效果。
使用Nidek EC - 5000准分子激光对66只散光度数在4.00至8.00 D的眼睛进行LASIK手术。根据Chayet视力表，消融区直径为5.5 mm（陡峭子午线消融）至7.5 mm（平坦子午线消融）。对于单纯近视散光、混合性散光和复合性近视散光（低球镜度）的眼睛，在两个子午线上进行消融。对于单纯远视散光的眼睛，仅在平坦子午线上进行消融。对于复合性远视散光的眼睛，消融区直径为5.5 mm，过渡区为7.5 mm。
89%的眼睛未矫正视力达到20/40或更好，62%的眼睛未矫正视力等于术前最佳眼镜矫正视力。没有眼睛失去最佳眼镜矫正视力的行数。
基于Chayet视力表，使用Nidek EC - 5000准分子激光治疗散光度数在4.00至8.00 D的眼睛取得了满意的效果。
